Lever for loom-dobbies



Patented Feb. 22,1921.

W H. NEEDHAM AND N. VILE.

LEVER FOR LOOM D OBBlES.

- APPucATloN man JUNE 12, |920. 1,369,700.

il NITE STAT WILLIAM H. NEEDHAM AND NORMANJ. vrLE, or'woiicns'rna,MASSACHUSETTS,

essreivons 'ro cnoiur'roiv a KNOWLES Loom -wonKs .A `CORPQRATION forMASSACHUSETTS.

LEVER' ron Loom-Dosieres. k

Lscavco.

To allwhom t may concern Be it known that we, VILLIAM H. NEED- HAM andNORMAN J. Vim, citizens of the United States, both residing atWorcester,

in the county of Worcester and State' of It is one object of ourinvention to improve the construction and lower the cost of manufactureof such levers by constructing the same from a single piece of sheetmetal.

Another feature of our invention relates to the vision of a novelconnection by which the dobby hooks may be easily secured to the lever.

Further features of our invention relate to arrangements andcombinations of parts hereinafter described and more particularlypointed out in the appended claims.

A preferred form of our invention is Shown in the drawings in'which-Figure 1 is a sectional elevation of certain parts of a loom dobby,showing our improved lever in its operation position;

Fig. 2 is a side elevation of the lever and the attached hooks;

Fig. 3 is an edge elevation 'of the lever;

Fig. 4 is a sectional plan view of one end of the lever, taken along theline 1 -4 in Fig. 2'

Fig is a side elevation of one end of the lever when partiallycompleted;

Fig. 6 is a collective view of one end of the lever,'one end of a hook,and the bushing which is used to connect the hook to the lever, and vFig. 7 is an enlarged side elevation of the bushing.

Referring to the drawings, Fig. 1 shows or harness lever 11 pivoted tothe frame atvv the point 12, a lifter bar 13, an indicator rod 14, upperand lower combs 15 and 16, upper and lower hooks 17 and 18, and a hooklever 19 pivoted at 20 to the jack 11.

designed'v l The Construction 0f lever 19 is clearly I' Specification ofLetters Patent. Patented i: kpprmation filed aune 12, 1920. serial N.388,600.Av

shown in Figs.y"2i,`.4y and 5. Each lever is made from a single piece ofsheetmetal andv ispunched .or pressed out with lateral projections 21,22 and 23, indicated in dottedl lines,A in Fig. =h2. The projectingportion 21 i iS bentover against vthe rmain, portionof' the l lever toform a bearing` of double thickness] for thei'pivo't l20, as indicatedin Fig. l3. The

end projections22 andfarebent around'as I .1.; 1nd1'cated1nF1g. 4 toform Spacedbearing v portionsfor the bushings724 by whichthe hooks 17and 18 aresecured to the'lever 19. It will be noted that the portions22and 23 are'bent along the" same longitudinal edge l of the'lever 19 butthat they are disposed on opposite sides of the lever for convenience inassembling the dobby.

Openings 25 extend through the Separated end portions of the lever andone of .the openings at each end is also provided with a notch 26. Thehooks 17 and 18 are similarly provided with openings 27 also havingnotches 28. Each bushin 24 is formed to lit the openings 25 and 2 and isprovided with a lug'or projection 29 fitting the notches 26 and 28. y

In assembling the parts, the hooks are placedin the dotted linepositions shown in Fig. 2, with the notches 28 in the hooksl alined withthe notches 26 in the levers. The bushings are then inserted and thelugs 29 are pushed through the notches 26v and lare positioned in thenotches 28. The hooks arevthen swung around to the full line oroperative position shown in Fig. 2, in which positions the notches 26and 28 are out of alinement and the lugs 29 prevent axial displacementof the bushings. The parts are thus very easily assembled without theuse of any tools and maybe as easily separated should occasion arise.

Asythe levers 19 rock against cross bars 30 and 31, (Fig. 1) when one ofthe hooks 17 or 18 is pulled to the right, it is desirf able' to roundoif the eXtreme ends of the levers as indicated at 32 in Fig. 2.

Having thus described our invention, lit will be seen that a strong anddura-ble lever is provided that may be cheaply and easily constructed,and that an extremely simple and convenient connection is also providedfor Securing the hooks thereto.

Having thus described our invention, it

will be evident that changes and modiications can be made therein bythose skilled inthe art within the spirit and scope of our invention asset forth in the claims and we do not wish to be otherwise limitedv tothe i details herein disclosed, but what we claim 1. A lever for a loomdobby comprising a single piece of sheet metal having spaced bearingportions at both ends of said lever, the two parts of each bearingportion being joined along one edge only and having a U-shapedtransverse cross-section, and said connecting edges being disposedlongitudinally of said lever.

2. A lever for a loom dobby comprising aY single piece of sheet metalbent to form a center bearing of double thickness, and end bearin eachhaving an oil-set portion, said o -set portions being disposed onopposite sides of said lever and being joined to thebody of the leveralong a single edge extending longitudinally of said lever and at thesame edge thereof.

3. In a dobby, a lever having spaced bear ing portions with alinedopenings therein, one of said openings having a notch, a dobby hookhaving a corresponding notched opening, and a bushing for said hookfitting said several openings and having a lug adapted to pass throughthe notch in said lever and to be received in the notch in said hook,said notches being out of alinement when the hook and lever are disposedin operative relation.

4. A lever for a loom dobby comprising a single piece of sheet metalhaving spaced bearing portions at both ends of said lever, the two partsof each bearing portion being joined along one outer edge only.

In testimony whereof we have hereunto aixed our signatures.

WILLIAM H. NEEDHAM. NORMAN J. VILE.

